*{
    margin: 0;
    padding: 0;
}
.app{
    width: 100vw;
    height: 100vh;
    background: url(../../static/image/20220418203517.73d99f43.jpg) 100% 100% no-repeat;
    background-size: 100%;
    .from{
        width: 348px;
        margin: 0 auto;
        .username{
            width: 348px;
            height: 40px;
            margin-top: 80px;
        }
        .password{
            width: 348px;
            height: 40px;
        }
    }
}